20里面有4个请选择ABCD4L0N7I'b5^0N3p5{8d1z1Y/e4X。(v2y*c5y0|6L1r3E)R
A.10(v2y*c5y0|6L1r3E)R
B.4(v2y*c5y0|6L1r3E)R
C.5(v2y*c5y0|6L1r3E)R
D.16(v2y*c5y0|6L1r3E)R